Oxides of Nitrogen
|
Name |
Formula |
OS of N |
Common methods of preparation |
State & nature |
|
Dinitrogen oxide [Nitrogen(I)
oxide] |
N2O |
+1 |
NH4NO3 |
colourless gas, neutral |
|
Nitrogen monoxide
[Nitrogen(II) oxide] |
NO |
+2 |
2NaNO2 + 2FeSO4 +
3H2SO4 → FeSO4 + 2NaHSO4 +
2H2O + 2NO |
colourless
gas, neutral |
|
Dinitrogen trioxide
[Nitrogen(III) oxide] |
N2O3 |
+3 |
2NO + N2O4 |
blue solid, acidic |
|
Nitrogen dioxide
[Nitrogen(IV) oxide] |
NO2 |
+4 |
2Pb(NO3)2 |
brown gas,
acidic |
|
Dinitrogen tetroxide
[Nitrogen(IV) oxide] |
N2O4 |
+4 |
2NO2 heat |
colourless solid/ liquid, acidic |
|
Dinitrogen pentoxide
[Nitrogen(V) oxide] |
N2O5 |
+5 |
4HNO3 + P4O10 →
HPO3+2N2O5 |
colourless
solid, acidic |
Structures
of Oxides of Nitrogen
NO2 contains
odd number of valence electrons. That is why it is converted to stable N2O4 molecule
with even number of electrons, on dimerisation.
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